Fastening device.



G. B. SINCLAIR & L. 0. WHITMAN.

FASTENING DEVICE. APPLICATION FILED FEB. 19, 1915.

M. WWW, Patented Nov. 2, 1915.

W Fig 2 GEORGE B. SINCLAIR, 0F GEORGETOWN, MAINE, AND LEONARD O. WHITMAN, OF MARLBORO, MASSACHUSETTS.

FASTENING DEVICE.

Specification of Letters Patent.

Patented Nov. 2, 1915.

Application filed February 19, 1915. Serial No. 9,226.

To all whom it may concern:

Be it known that we, GEORGE B. SINCLAIR, of Georgetown, in the county of Sagadahoc and State of Maine, and LEONARD O. Wnrr- MAN, of Marlboro,"in the Commonwealth of l\lassachusetts, both citizens of the United States, have invented certain new and useful Improvements in Fastening Devices, of which the following is a full, clear, and exact specification.

The object of this invention is the construction of an improved means for fastening articles together, especially for attaching rubber heels to boots and shoes.

Referring to the drawings forming part of this specification, Figure 1 is a perspective view from the under side, of a completed heel made in accordance with our invention. Fig. 2 is a perspective view of the same before the rubber has been applied. Fig. 3 is a perspective view of the rubber section. Fig. 4 is a central longitudinal section of the heel before the rubber has been wholly fastened in place. Fig. 5 is a similar view after the rubber section is firmly fastened. Fig. 6 is a side view of one of the fastening pins.

As shown in Fig. 2, the fore part of the heel l is made in the usual manner of leather, but the rear section is cut away to a depth of about half the height of the heel. In this recess 2 is fitted a rubber section 3, disposed to have its surface flush with that of the leather heel-section 4.

To fasten the rubber in place, We prefer to form the rubber heel section 3 with a plurality of cylindrical plugs 5, and to make in the heel base 6 an equal number of cylindrical recesses 7 the depths of which about equal the length of the plugs 5, but of slightly greater diameter to permit the plugs to be introduced within the recesses without difficulty.

Axially into each plug and in the rubber heel section in alinement therewith, is formed a tapering hole 9, as shown in Fig. 4; and into each tapering hole is driven a sides of the recesses 7.

short but terminally rounded pin 10 (Fig. These pins aredriven to the bottoms of the holes, and being sufficiently large diametrically, expand the material composing the plugs into tight engagement with the The rubber closes in over the outer ends of the pins 10 and so locks them in place.

While the frictional grip of the recesses 7 on the plugs 5 is ample to securely hold the rubber heel section 3 against the possibility of coming off through any ordinary exigencies of use, yet said rubber section can be removed when desired, by forcing a knife or chisel in between the same and the base 6. The pins 10 can then be easily driven out for use again. If the rubber heel sections are more badly worn off at one side than the other, that of one foot can be transferred to the other foot, and so the life of both prolonged; or fresh rubber sections can be sub-.

stituted for the worn ones in the manner above described.

\Vhat we claim is:

The combination with a comparatively unyielding body having a recess opening into a surface thereof, of a resiliently yielding body having a portion thereof disposed for loosely entering said recess, and a pin substantially equal in length to said portion, the yielding body and projection having a slender hole smaller in diameter than said pin, whereby the forced position of said pin in the lower part of the slender hole expands said portion to tightly fit the recess receiving it, and the closing in over the pin of the yielding material about the upper part of the slender hole serves to retain the pin therein.

In testimony that we claim the foregoing invention, we have hereunto set our hands this 16th day of February, 1915.

GEORGE B. SINCLAIR. LEONARD O. WHITMAN.

Witnesses:

EDGAR WEEKS, GENEVIEVE M. DEAN. 

